Revert "Speculative logging for PostHog/posthog#4816 (#293)" (#302)

This reverts commit 5447142.
PostHog · Sep 30, 2021 · 6a3c0c6 · 6a3c0c6
1 parent 8eff39b
commit 6a3c0c6
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Showing 5 changed files with 5 additions and 98 deletions.
diff --git a/README.md b/README.md
@@ -28,40 +28,8 @@ Use [`yarn link`](https://classic.yarnpkg.com/en/docs/cli/link/). Run `yarn link
 
 An alternative is to update dependency in package.json to e.g. `"posthog-js": "link:../posthog-js"`, `yarn` and run `yarn build && yarn build-module`
 
-## Alternative to yarn link
 
-Run `npm install -g yalc`
-
-In the posthog-js repo
-
-* run `yalc publish`
-
-In the posthog repo
-
-* run `yalc add posthog-js`
-* run `yarn`
-* run `yarn copy-scripts`
-
-### When making changes
-
-In the posthog-js repo
-
-* run `yalc publish`
-
-In the posthog repo
-
-* run `yalc update`
-* run `yarn`
-* run `yarn copy-scripts`
-
-### To remove the local package
-
-In the posthog repo
-
-* run `yalc remove posthog-js`
-* run `yarn install`
-
-## Developing with main PostHog repo
+### Developing with main PostHog repo
 
 The `posthog-js` snippet for a website loads static js from the main `PostHog/posthog` repo. Which means, when testing the snippet with a website, there's a bit of extra setup required:
 

diff --git a/src/__tests__/capture-metrics.js b/src/__tests__/capture-metrics.js
@@ -9,6 +9,7 @@ describe('CaptureMetrics()', () => {
 
     given('enabled', () => true)
     given('capture', () => jest.fn())
+
     given('getTime', () => jest.fn())
 
     describe('incr() and decr()', () => {
@@ -84,32 +85,8 @@ describe('CaptureMetrics()', () => {
             given.captureMetrics.captureInProgressRequests()
             given.captureMetrics.markRequestFailed({ foo: 'bar' })
             given.captureMetrics.finishRequest(null)
-            given.captureMetrics.addDebugMessage('tomato', 'potato')
 
             expect(given.capture).not.toHaveBeenCalled()
         })
-
-        describe('logging debug messages via metrics', () => {
-            it('does nothing if not enabled', () => {
-                given('enabled', () => false)
-
-                given.captureMetrics.addDebugMessage('tomato', 'potato')
-
-                expect(given.captureMetrics.metrics).toEqual({})
-            })
-
-            it('does something if capture metrics is enabled', () => {
-                given('enabled', () => true)
-
-                given.captureMetrics.addDebugMessage('tomato', 'potato')
-                given.captureMetrics.addDebugMessage('potato', 'salad')
-                given.captureMetrics.addDebugMessage('potato', 'chips')
-
-                expect(given.captureMetrics.metrics).toEqual({
-                    'phjs-debug-tomato': ['potato'],
-                    'phjs-debug-potato': ['salad', 'chips'],
-                })
-            })
-        })
     })
 })
diff --git a/src/capture-metrics.js b/src/capture-metrics.js
@@ -23,16 +23,6 @@ export class CaptureMetrics {
         }
     }
 
-    addDebugMessage(key, payload) {
-        if (this.enabled) {
-            key = `phjs-debug-${key}`
-            if (!this.metrics[key]) {
-                this.metrics[key] = []
-            }
-            this.metrics[key].push(payload)
-        }
-    }
-
     startRequest(payload) {
         if (this.enabled) {
             const requestId = _.UUID()

diff --git a/src/compression.js b/src/compression.js
@@ -12,43 +12,15 @@ export function decideCompression(compressionSupport) {
     }
 }
 
-function hasMagicGzipHeader(compressionResultElement) {
-    try {
-        const a = compressionResultElement[0]
-        const b = compressionResultElement[1]
-        return a === 31 && b === 139
-    } catch (e) {
-        return false
-    }
-}
-
-export function compressData(compression, jsonData, options, captureMetrics) {
+export function compressData(compression, jsonData, options) {
     if (compression === 'lz64') {
         return [{ data: LZString.compressToBase64(jsonData), compression: 'lz64' }, options]
     } else if (compression === 'gzip-js') {
         // :TRICKY: This returns an UInt8Array. We don't encode this to a string - returning a blob will do this for us.
-        const compressionResult = [
+        return [
             gzipSync(strToU8(jsonData), { mtime: 0 }),
             { ...options, blob: true, urlQueryArgs: { compression: 'gzip-js' } },
         ]
-
-        // temporary logging to identify source of https://github.com/PostHog/posthog/issues/4816
-        try {
-            const jsonDataIsUnexpected = !jsonData || jsonData === 'undefined'
-            if (jsonDataIsUnexpected || !compressionResult[0] || !hasMagicGzipHeader(compressionResult[0])) {
-                captureMetrics.addDebugMessage('PostHogJSCompressionCannotBeDecompressed', {
-                    jsonData,
-                    compressionResult: compressionResult[0],
-                })
-            }
-        } catch (e) {
-            captureMetrics.addDebugMessage('PostHogJSCompressionCannotBeDecompressed-error', {
-                error: e,
-                message: e.message,
-            })
-        }
-
-        return compressionResult
     } else {
         return [{ data: _.base64Encode(jsonData) }, options]
     }

diff --git a/src/posthog-core.js b/src/posthog-core.js
@@ -368,7 +368,7 @@ PostHogLib.prototype._handle_queued_event = function (url, data, options) {
 }
 
 PostHogLib.prototype.__compress_and_send_json_request = function (url, jsonData, options, callback) {
-    const [data, _options] = compressData(decideCompression(this.compression), jsonData, options, this._captureMetrics)
+    const [data, _options] = compressData(decideCompression(this.compression), jsonData, options)
     this._send_request(url, data, _options, callback)
 }